Pinterest Food Challenge: Watermelon Cake

I bet ya’all thought I forget abou the Pinterest Food Challenge, but I can assure you I did not. Lately I’ve just been sticking with some of my favorite recipes, like pink lemonade cupcakes and sugar doodle cookies.

For the fourth of July, though, I tried out something new and DELICIOUS: Watermelon Cake from Bird on a Cake



Once a month, cook or bake something you’ve pinned- put those pins to use people!

Overall, I found this recipe super simple to follow and I only altered two things: no chocolate chips in the cake and a whole lot more watermelon puree in the frosting. Check on the original recipe here, and this is how I did it:


  • 1 box white cake mix
  • 1 (3 oz.) box of watermelon Jell-O powder (set aside 2 teaspoons for frosting)
  • 1/2 cup watermelon puree
  • 1/2 cup water
  • 1/2 cup oil
  • 4 eggs
  • 12-15 drops red food coloring

Preheat the oven to 350* and line 2 round cake pans with wax paper (I traced the pan on the paper then cut it out), then spray the sides of your pans.

In a large bowl, beat eggs then combine cake mix, Jell-O, water and oil then mix on medium speed. Next, add watermelon puree and beat until blended. Add red food coloring a little at a time, until you reach the shade you want. Pour into pans and bake for 30 minutes.

Once the cake has cooled, cut the edges off- they’ll be a little stiff and browned and your cake will taste better without them. I actually recommend you do this every time you bake a layer cake.


  • 8 oz. cream cheese (softened)
  • 1/2 cup unsalted butter (softened)
  • 5 cups confectioners’ sugar
  • 3 tablespoons watermelon puree
  • 2 teaspoons watermelon Jell-O powder
  • red and green food coloring

In a large bowl, combine all ingredients but sugar and food coloring. Beat until well blended then add the sugar one cup at a time while beating on medium. Separate 1/3 of the frosting to color green, then color the remainder red.


To make the banner I just used 2 skewers, colored paper, ribbon, and a star shaped hole punch. Tie the yarn to either end of the skewer, fold your colored paper in half and cut out triangles then glue them hanging over the yarn, punch out your stars and glue them on too- it took about 5 minutes!


It was DELICIOUS, I’m so glad I found the recipe and it really was simple and sans weird ingredients I’ve never heard of.

What have you been baking this summer??




7 thoughts on “Pinterest Food Challenge: Watermelon Cake

  1. I’m glad to hear it’s delicious! I don’t think that’s one that I would’ve tried without reading a review of it first. 🙂

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